You have electronic Meters by Apexi? EL II System meters will require one of these Control units to allow them to function properly.
Please don't forget to add this to your purchase.You have electronic Meters by Apexi?...

Install one of the best Turbo timers in the market for your car! Not only is it a turbo timer but it will allow you to read Time Countdown, Battery Voltage, A/F Value, and O2 Sensor Voltage (narrow-band).Install one of the best Turbo timers...